Bed-spring



UNITED STATES PATENT OFFICE.

S. D. NEVBRO, OE LANSING, MICHIGAN.

BED-SPRING.

Specification of Letters Patent No. 25,577, dated September 27, 1859.

To all whom 'it may concern:

Be it known that I, S. D. Nnwno, of Lansing, in the county of Ingham andState of Michigan, have invented certain new and useful Improvements inBed-Springs; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to t-heaccompanying drawings7 and to the letters of reference marked. thereon.

The nature of my invention consists in constructing and securingtogether oblong plates of wood or metal in the manner hereinafterdescribed for the purpose set forth.

In the drawings A represents the base upon which the spring is erected.

a., a, a, represent oblong plates or strips of metal or wood which areput together as follows,-The first, or bottom plate, being laid upon thebase and secured to it I take the next plate and secure it by means ofpins or bolts or in any other suitable manner to the end of the firstplate and at right angles to it-or rather on top of the first plate nearits end. The third plate I secure on top of the second near its end andat right angles to it-and the fourth plate I secure to the third in likemanner and so -continue to secure plates together until my spring is aslarge or high as is necessary. Then upon the top I secure a platform B.By arranging the plates together in this manner I form a square springwhich may be used for bed springs or for chairs, lounges, buggies,carriages, or for any other purpose where springs can be employed.

Guides either on the out or inside of the plates when secured togethermay be usedi to prevent the spring from giving more on one side or theother than is desirable. Springs may by this arrangement be made ofblocks or plates of wood which in and of themselves are nonelastic asrepresented in the model.

The thickness given to the plates will vary according to circumstances.They may be made from of an inch to six inches thick if' necessary andof any required length.

I do not propose to confine myself to the exact form of spring hereinshown. I may find it convenient in some instances to use a triangularspring.

The advantages of this spring are very many. By this means a firm,durable, and very elastic spring may be formed of blocks and shortpieces of wood or other material which would otherwise be of no account.This is only one advantage and I mention it because it is an advantagewhich no other spring possesses.

Having thus fully described my invention,

what I claim as new and desire to secure by Letters Patent is- Theemployment of the oblong plates a., a, a, whether made of wood, or ofmetal or any other suitable material, when the same are secured togethersubstantially as and for the purpose set forth.

S. D. NEWBRO. Witnesses:

JOSEPH GRAVES, J. P. CowLns.

